Costco premium alloy Saturn C-wheels do not fit 2005 Lexus RX330
Problem: As above. Although the Costco fitment guide states that the Saturn C-Wheels (model CW081495) will fit a 2004-2012 RX330 and related models, they do NOT fit on the rear. The Costco guide is terrible because it does not list wheel offset nor wheel width, and in this case they do not work. I realized this going in but somewhat naively figured they knew what they were doing. Width is not much of an issue because most tires will fit a wide range of wheel widths. For example, the stock 235/55R18s of the RX330 will fit wheels from 6.5" to 8". As the typical wheel width these days is 7" to 8", with 7.5" being quite popular, this is OK. (To figure out the range of wheel sizes for your tires, try this handy calculator .) Offset can be a real problem. Too much offset and the tires will hit stuff on the car. Still, you do tend to have a fairly wide range to worth with. So it seemed low risk. Unfortunately, in this case...